Orenco (OR) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Orenco.
Climate overview of Orenco
The climate in Orenco, Oregon, United States of America, is marked by large temperature swings across the seasons, ranging from 28°C (82°F) in August to 8°C (46°F) in December.
Orenco sees a moderate amount of rain/snowfall, totalling around 984 mm (39 in) per year. It experiences a distinct dry season from June to September, with warm summers and cold winters, creating some seasonal variation. The most sunshine falls in July, with an average of 11.1 hours of daily sunshine.
Orenco Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Orenco - and find the best time to visit.
Monthly Temperature in Orenco
In Orenco, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in August, the warmest time of the year, to a chilly 8°C (46°F) during cooler months like December.
At night, you can expect temperatures ranging from 13°C (55°F) in August to around 2°C (36°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Orenco
On average, Orenco receives a reasonable amount of rain/snowfall, with an annual precipitation of 984 mm (39 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives heavy rainfall, averaging 183 mm (7.2 in) of precipitation, recorded across 22 rainy days. In contrast, the driest month July brings less rainfall, with 10 mm (0.4 in) over 5 rainy days. For more details, please visit our Orenco Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Orenco
Seasonal changes in sunshine hours are quite dramatic in Orenco. While July receives considerable daily sunshine with up to 11.1 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.1 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Orenco by Month
The relative humidity is high throughout the year in Orenco.
The city experiences its highest humidity in December, reaching 83%. In July, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Orenco
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July and August
- Wettest months: January, February, March, November and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from June to September, with warm summers and cold winters
Frequently asked questions about the climate in Orenco
What is the best time to visit Orenco?
May, June, July, August and September typically offer the most optimal weather in Orenco. In contrast, January, March, November and December tend to have less optimal conditions. Orenco has a distinct dry season from June to September, with warm summers and cold winters.
What temperatures can I expect in Orenco?
Daytime highs range from 8°C (46°F) in December to 28°C (82°F) in August. Nighttime lows range from 2°C (36°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Orenco get?
Annual rainfall is around 984 mm (39 in). December is the wettest month with 183 mm (7.2 in), while July is the driest with 10 mm (0.4 in).
How sunny is Orenco?
Orenco receives around 2,341 hours of sunshine per year. July is the sunniest month with 332 hours, while December is the cloudiest with just 64 hours. Overall, Orenco enjoys abundant sunshine.
Orenco 3-Day Forecast
Orenco on the map
Orenco is highlighted - select any city to see its climate.
Popular this month
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.